|Location Map ( geo)|
|To:||St Budeaux (SX445582)|
|Via:||Egg Buckland, Crownhill|
|Distance:||5.5 miles (8.9 km)|
|Met:||A38, A386, A387|
|Now part of:||A38, B3413|
|Route outline (key)|
The number B3246 was initially allocated to the Plymouth northern bypass.
The road was upgraded to become the A3078 at some time before 1932. It then became part of the A374 in 1935. In 1961 with the building of the Tamar Bridge the routes of the A374 and A38 through Plymouth were swapped so that that the A38, the more important road, was able to cross to Cornwall on a bridge.
Later still the present route of the A38 was built just to the south so the ex-B3246 has largely been downgraded to become the B3413. It is still part of a heavily upgraded A38 at Marsh Mills and is unclassified in St Budeaux.